All commercial motor vehicles with a gross weight of 60,000 pounds or more must secure a KYU number before operating on Kentucky highways. Temporary KYU numbers are available (Click here to apply for a 10 day temporary) but are a costly alternative to securing a permanent KYU number.

A KYU number is proof that you have registered with Kentucky to pay a per mile tax. Highway use tax forms will be sent to you on a quarterly basis and must be completed and returned by the required due date. KYU numbers no longer need to be posted on the sides of your power unit since your USDOT# will be used as means of identifying the carrier and the status of the carriers KYU account.

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